middleton



(No Model.) 3 SheetS- Sheet 1. W. MIDDLETON & W. WILSON. APPARATUS FOR GRINDING CARD TEE-TH FOR GARDING FIBERS.

Patented May 27 (No Mode l 3 Sheets-Sheet 2. W. MIDDLETON & W. WILSON.

APPARATUS FOR GRINDING CARD TEETH FOR GARDING FIBERS.

No. 429,044. Patented May 27,1890

(No Model.) 3 Sheets-Sheet 3.

w. MIDDLETON & W. WILSON. APPARATUS FOR GRINDING CARD TEETH FOR GARDING FIBERS..

No. 429,044. Patented May 27, 1890.

UNITED STATES PATENT OFFICE.

\VILLIAM MIDDLETON AND IVILLIAM WVILSON, OF LIVERSEDGE, COUNTY OF YORK, ENGLAND.

APPARATUS FOR GRINDING CARD-TEETH-FOR CARDING FIBERS.

SPECIFICATION forming part of Letters Patent No. 429,044, dated May 27, 1890.

Applioatioufiled October 10, 1889. Serial No. 326,570. (No model.)

To all whom it may concern.-

Be it known that we, WVILLIAM MIDDLETON and WILLIAM WILsoN, subjects of the Queen of Great Britain and Ireland, residing at Liversedge, in the county of York, England, have invented certain Improvements in Apparatus for Grinding Card-Teeth for Oarding Fibers, of which the following is a specification. v

This invention relates to certain improvements in apparatus for grinding the teeth or dents of card-clothing, and has for its object the combination of certain mechanical appliances and motions in such a manner that both the ends and sides of the teeth may be ground simultaneously, and thereby grind them to what is known as needle-pointed cards in a more expeditious manner; and it consists in mounting a cylinder of large diameter in a suitable frame and wrapping the card-fillet around the same and to the frame of the apparatus, fixing adjustable journals, in which rotate the shafts of the grinding-roller and grinding-disks, the peripheries of the latter being A-shaped, and in addition to rotating the shaft and disks. have also a reciprocating and intermittent motion.

In the accompanying drawings, Figure 1 represents a side view of an apparatus suitable for pointing the teeth or dents of cardclothing. Fig. 2 is a plan of the same, and Figs. 3 and 4: detached details drawn to a larger scale. Fig. 5 is a detail illustrating a modified construction. Fig. 6 is a side elevation of the upper portion of the machine on an enlarged scale. Fig. 7 is an enlarged partial plan view showing the principal parts.

On the machine-frames A is mounted a cylinder B, similar to those used on carding-engines, and around the circumference of the cylinder is tightly wrapped the card-fillet O, the ends being secured to the cylinder in any convenient manner.

The cylinder B may be driven from the main shaft D of the machine by a belt passing over pulleys E and F, and gearing G G G connecting pulley F with the shaft of the cylinder, thereby moving it slowly.

To the upper part of each side frame A are secured brackets H and J, each supporting on a center stud a circular toothed wheel or disk K, on which are formed the projecting bearings L, for supporting the shafts of the grinding-roller M and grinding-disks N, the peripheries of the latter being A-shaped. The shafts of roller M and disks N are preferably driven from the main shaft by belting E and the gearing M N, as shown in Fig. 2, although they may be, if desired, driven from a main or separate counter-shaft in the works.

The grinding-roller M and disks N are by preference made of consolidated emery, similar to ordinary emery-wheels, and on the cylinder B being put in motion the journals supporting the roller M are adjusted by pinions P, so that the circumference of the said roller is in a suitable position for grinding the points of the card-teeth to sharpen and make them all of equal length.

The mechanism for operating the pinions P and P consists of forming a square at- X, Fig. 7, on the end of each shaft Z, so that on placing a box key or handle on one end of either shaft the latter and the pinion P or P may be operated, thus moving the respective toothed wheel or disk K and the projecting bearings L toward or away from the cardteeth on the circumference of the cylinder B. The grinding-disks N are brought into contact with the card-teeth in a similar manner by pinions P but the extreme circumferences of the disks are below the points of the teeth, so that the taper sides of the disks N comein contact and grind the sides of the teeth, thereby bringing them to a point; and in order that all the teeth may be ground equally at the sides and brought to a point a number of disks equal to about the width of the cylinder B are placed on shaft R and secured thereon by nut S, the shaft and disks being operated for some distance first in one direction and then in the other in the following manner:

On the shaft or axle of cylinder B is secured a tappet T, which on each revolution raises one end of the lever L, supported at 5 the opposite end by a stud-pin. To this lever is jointed a catch arm or pawl P the end of which is kept in contact with the ratchetwheel R by means of spring S.

The ratchet-wheel R is supported by a too short shaft passing through a bracket U, secured to one of the end frames A, and on the same shaft is secured a cam-plate 0, having a circumferential rim of irregular width. On the rotating shaft R, carrying the grindingdisks N, are secured two collars 0 between which is a collar or boss C free for the shaft R to revolve therein, and to which is attached an arm Y, kept in contact with the face of cam-plate C by means of spring S so that on each revolution of cylinder B the camplate 0 is operated acertain distance, thereby causing the revolving shaftR and disks N to be moved for a time in one direction and then in the other, the teeth or dents springing sufliciently to allow the grinding-disks N, when operated, to pass from one furrow or space to the next, thus operating with uniformity 011 all the teeth or dentsof the card and grinding them to what are termed needlepoints. The rotating grinding-roller M acting 011 the ends of the teeth grinds them all to an equal length.

The apparatus is also applicable for grinding and pointing the teeth or dents of what is known as sheet card-clothing,by adding to the apparatusalread y described a carriage 1 on each side of the machine, and mounting thereon a stretching-roller 2.

The sheet card-clothing 3 is passed over the cylinder B and stretching-roller 2 and the ends stitched together, thereby forming an endless sheet, which is tightened by the before-mentioned carriages being moved in the direction of the arrow by means of screws 4, or other well-known device, by which sulficient friction is obtained between the cylinder B and clothing for the latter to rotate along with the cylinder. The catch arm or pawl P and tappet T may be dispensed with when grinding card-clothing, and the ratchetwheel R operated by attaching to the edge of the card-clothing 3 a finger F, having three or more prongs formed somewhat as shown by Fig. 5, which embrace the cardclothing, one arm of the finger being so bent that it will come in contact with the teeth of the ratchet-wheel R once every revolution of the card-clothing, and thus operate the camplate 0', so that the disks N are moved once every revolution of the card-clothing, first in one direction and then in the other, the roller M and disks N acting on the card-teeth in the manner as before described.

\Vhat we claim is- 1. In a machine for grinding card-teeth, the combination, with a grinding-roller and grimling-disks, of mechanism for operating said grinding-disks, whereby the disks are reciprocated to operate intermittently upon both sides of the card-teeth, substantially as described.

2. The combination of a tappet T, ratchetwheel R, cam-platc 0, arm Y, and grindingdisks N, substantiallyin the manner and for the purpose as hereinbefore described.

3. The combination of a cylinder B and card fillet or clothing, a grinding-roller M, and grinding-disks N, with a tappet T, pawl P, ratchet-wheel R, cam-plate C, and rollershaft R, substantially in the manner and for the purpose hereinbefore set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

VILLIAM MIDDLETON. VM. WILSON. lVitnesses:

JNo. GILL, WM. PREST. 

